class_docstr: Talbot's method for numerical inversion of the Laplace transform.
  
  Reference
  Abate, Joseph, and Ward Whitt. "A Unified Framework for Numerically
  Inverting Laplace Transforms." INFORMS Journal of Computing, vol. 18.4
  (2006): 408-421. Print. (http://www.columbia.edu/~ww2040/allpapers.html)
  
  Implementation here is adapted from the MATLAB implementation of the algorithm by
  Tucker McClure (2021). Numerical Inverse Laplace Transform
  (https://www.mathworks.com/matlabcentral/fileexchange/39035-numerical-inverse-laplace-transform),
  MATLAB Central File Exchange. Retrieved April 4, 2021.
  
  :param num_steps: number of terms to sum for each t.
class_docstr_tok: ["Talbot","'s","method","for","numerical","inversion","of","the","Laplace","transform",".","Reference","Abate",",","Joseph",",","and","Ward","Whitt",".","``","A","Unified","Framework","for","Numerically","Inverting","Laplace","Transforms",".","''","INFORMS","Journal","of","Computing",",","vol",".","18.4","(","2006",")",":","408-421",".","Print",".","(","http",":","\/\/www.columbia.edu\/~ww2040\/allpapers.html",")","Implementation","here","is","adapted","from","the","MATLAB","implementation","of","the","algorithm","by","Tucker","McClure","(","2021",")",".","Numerical","Inverse","Laplace","Transform","(","https",":","\/\/www.mathworks.com\/matlabcentral\/fileexchange\/39035-numerical-inverse-laplace-transform",")",",","MATLAB","Central","File","Exchange",".","Retrieved","April","4",",","2021.",":","param","num_steps",":","number","of","terms","to","sum","for","each","t","."]
code: def __init__(self, num_steps):
      super().__init__("talbot")
      self.num_steps = num_steps
  
file_path: funsor/examples/talbot.py
imports: import argparse
  import math
  import torch
  import funsor
  import funsor.ops
  from funsor.adam import Adam
  from funsor.domains import Real
  from funsor.factory import Bound, Fresh, Has, make_funsor
  from funsor.interpretations import StatefulInterpretation
  from funsor.tensor import Tensor
  from funsor.terms import Funsor, Variable
  from funsor.util import get_backend
label_desc: Use image node_id 1 to create a new Talbot object from inherited base classes: StatefulInterpretation with example: obj = Talbot(num_steps)